Band 5.5 IELTS Writing Task 1 Model Answer

Overall Band Score: 5.5 · Cambridge IELTS 14 · 2026-09-08

IELTS Writing Task 1 question

The diagram below shows how electricity is generated in a hydroelectric power station.

Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

Student answer (Band 5.5)

The provided picture depicts the details of the electricity is produced in a hydroelectric power station by using of flow of water.

Overall, It is cyclic process which is mainly divided in six steps begaining with high level reservoir in dam structure and that produced the electricity from water flow than during the night reverse into the high level reservoir by using of pumping system.

Firstly, dam is constructed in the upper tropical area then constructed slider way for generate water flow in high speed and it was directly contact with the pumping station and they have one dynamo so it can produce electricity from the high pressure of the water flow after that generated power lines to national grid.

secondly, low level of water is using of reverse transfer system in power station and that was helping to reverse the water into the water reservoir and this process is happen during the night time.

AI examiner evaluation

Task Achievement / Task Response — Band 5.5

The response covers the main features of the hydroelectric power station, including the generation process and the pumping cycle. However, the description is somewhat superficial. For example, the explanation of the 'slider way' (likely referring to the penstock) and the 'dynamo' (turbine/generator) lacks technical precision. While the main stages are identified, the relationship between the components could be more clearly explained to fully satisfy the requirements of a Task 1 report. The overview is present but lacks a clear summary of the cyclical nature of the process, which is a key feature of the diagram.

Coherence and Cohesion — Band 5.5

The essay is divided into paragraphs, which helps the reader follow the structure. However, the use of cohesive devices is often mechanical or inaccurate. Phrases like 'after that generated power lines' and 'this process is happen' disrupt the flow of information. The logical progression between sentences is sometimes weak, making it difficult to follow the sequence of the hydroelectric process. Referencing is occasionally unclear, and the transition between the generation phase and the pumping phase could be managed more effectively to improve the overall readability of the report.

Lexical Resource — Band 5.0

The vocabulary is limited and sometimes imprecise. The student uses terms like 'slider way' and 'reverse transfer system' which do not accurately describe the technical components shown in the diagram. There are also issues with word choice, such as 'using of flow of water' instead of 'using the flow of water'. While the vocabulary is sufficient to convey the basic meaning, it lacks the precision and range expected for a higher band score. More specific terminology related to engineering or power generation would significantly improve the quality of the response.

Grammatical Range and Accuracy — Band 5.0

The response contains frequent grammatical errors that occasionally impede communication. There are issues with article usage ('the electricity is produced'), verb tense consistency ('this process is happen'), and sentence structure. Many sentences are run-on or lack proper punctuation, such as the second paragraph which is a very long, poorly connected sentence. While there is an attempt to use complex structures, they are often faulty. To improve, the student should focus on basic sentence construction, subject-verb agreement, and the correct use of prepositions and articles.

See this exact question answered at other band scores — the same prompt compared across bands.

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